Hi! I have been using MacDrive for a long time, and I am very happy with it. But after some time, my WD My Book Studio 3TB Firewire drive has gotten very fragmented. Roughly a half of the disk is full, with very important data. On my MBP 13" I use Drive Genius 3, which diagnosed the drive as very fragmented and that I should defrag is as soon as possible. Because of my work though, I carry my MBP with me very often, and I'm not always at one place plugged in. Thus a question arising: I'd estimate that a defrag of a HFS+ volume would take around two+ days.. Would it be safe to defrag it on my Windows 7 Ultimate, which is a desktop that is turned on all the time. I'm scared and would like some more knowledge, about it being safe/not safe to defragment the mac formatted disk, which is well working with windows, on the windows. I don't have access or the time to leave my MBP for two days plugged in on one spot, that's why I'd need some help with this, thanks!